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package info.bliki.wiki.template.expr.operator;

import info.bliki.wiki.template.expr.ast.ASTNode;
import info.bliki.wiki.template.expr.ast.FractionNode;
import info.bliki.wiki.template.expr.ast.IParserFactory;
import info.bliki.wiki.template.expr.ast.IntegerNode;

public class DivideOperator extends InfixOperator {
    public DivideOperator(final String oper, final String functionName,
            final int precedence, final int grouping) {
        super(oper, functionName, precedence, grouping);
    }

    @Override
    public ASTNode createFunction(final IParserFactory factory,
            final ASTNode lhs, final ASTNode rhs) {
        if (rhs instanceof IntegerNode) {
            if (lhs instanceof IntegerNode) {
                return new FractionNode((IntegerNode) lhs, (IntegerNode) rhs);
            }
            return factory.createFunction(factory.createSymbol("Times"), lhs,
                    new FractionNode(IntegerNode.C1, (IntegerNode) rhs));
        }
        return factory.createFunction(factory.createSymbol("Times"), lhs,
                factory.createFunction(factory.createSymbol("Power"), rhs,
                        factory.createInteger(-1)));
    }
}